39 Therefore they could not believe, because that Isaiah said again,
John 12:39 Cross References - UKJV
Isaiah 6:9-10
9 And he said, Go, and tell this people, Hear all of you indeed, but understand not; and see all of you indeed, but perceive not.
10 Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes, and hear with their ears, and understand with their heart, and convert, and be healed.
Isaiah 44:18-20
18 They have not known nor understood: for he has shut their eyes, that they cannot see; and their hearts, that they cannot understand.
19 And none considers in his heart, neither is there knowledge nor understanding to say, I have burned part of it in the fire; yea, also I have baked bread upon the coals thereof; I have roasted flesh, and eaten it: and shall I make the residue thereof an abomination? shall I fall down to the stock of a tree?
20 He feeds on ashes: a deceived heart has turned him aside, that he cannot deliver his soul, nor say, Is there not a lie in my right hand?
John 5:44
44 How can all of you believe, which receive honour one of another, and seek not the honour that comes from God only?
John 6:44
44 No man can come to me, except the Father which has sent me draw him: and I will raise him up at the last day.
John 10:38
38 But if I do, though all of you believe not me, believe the works: that all of you may know, and believe, that the Father is in me, and I in him.
2 Peter 2:14
14 Having eyes full of adultery, and that cannot cease from sin; beguiling unstable souls: an heart they have exercised with covetous practices; cursed children: